杀螨的

Flufenzine was a new kind of acaricide which had low toxicity, high activity and special mode of action.

氟螨嗪是一种低毒、高效、机理独特的新型四嗪类杀螨剂。

Tebufenpyrad, a new high effective pyrazoleamide acaricide , was synthesized from 1-methyl-3-ethyl-4-chloro-5-pyrazolecarbon acid and 4-t-butylbenzylamine, the raw material are propionyl pyruvic ethyl ester and 4-t-butyl benzylchloride.

吡螨胺是一种新型、高效的吡唑酰胺类杀螨剂，本文以中间体1-甲基-3-乙基-4-氯-5-吡唑甲酸和4-叔丁基苄胺合成，起始原料丙酰丙酮酸乙酯和4-叔丁基苄氯，总收率为61.23%。

Its high effectiveness to acarid but lower toxity to rodent contributed to good crop harvest.

三氯杀螨醇对啮齿动物的毒性较低，杀螨效果好，促进了农作物的丰收。

Both together using are better because of good killing red spider egg and young acarid with Nisuolang and worth extending energetically.

噻螨酮1500倍效果更佳，噻螨酮因为杀螨卵突出，两者的配合制剂防治效果好、持续时间长。

Dichlorvos was once a good product and widely used for its outstanding effect on knocking down insects and easy volatilizing. But DDVP and chlorpyrifos are limited to use for the reason of safety. According to the recommendation of WHO, a new miticide,pirimiphos-methyl, was developed by Hunan chemical academy in 1999. It can be used for controlling mosquitoes, flies, cockroaches and mites et al.

有机磷杀虫剂中的敌敌畏由于具有击倒作用与杀灭能力较强，又有自然挥发功能，所以，是应用最广的品种，但DDVP在卫生杀虫剂中已处于限制使用状态。1999年，湖南化工研究院，根据WHO的推荐，研制开发了广谱，速效杀虫，杀螨剂—甲基嘧啶磷，可用于防制蚊，蝇，蟑螂和螨等。

The dissipation rate constants of malathion and methyl parathion with a concentration of 3mg/L and ethion, dicofol and cyhalothrin with a concentration of 0.5mg/L in 2000ml of 55-60g canna planted water sulution were respectively increased by 77. 66％, 117. 44％, 64. 80％, 38. 11％ and 15. 35％ compared to those in unplanted water solutions.

与不种植植物的对照相比，50-60g美人蕉对2000ml分别含有3mg/L的马拉硫磷、甲基对硫磷及0.5mg/L乙硫磷、三氯杀螨醇和三氟氯氰菊酯培养液中的马拉硫磷、甲基对硫磷、乙硫磷、三氯杀螨醇和三氟氯氰菊酯的消解速率依次分别提高了77.66％、117.44％、64.80％、38.11％和15.35％。

Then the extracts of petroleum ether,chloroform,ethyl acetate,n-butanol and distilled water were extracted by solvent extraction,and whose acaricidal activity were detected by killing Psorptes communis cuniculi in vitro.

用石油醚、氯仿、乙酸乙酯、正丁醇、蒸馏水五种溶剂对丁香进行部位提取，采用离体杀螨试验观察各部位提取物的杀螨活性。

The results indicated that the bioactivity(touch kill, oviposit inhibition, repellency)of methyl linoleate was high , the adjusted mortalities of female mite and egg were 82.82% and 78.54%, Oviposit inhibit ion rate and repellency rate were 78.46% and 95.61%,respectively at the concentration of 5 mg/ml.

亚油酸甲酯具有较强的触杀、产卵抑制和驱避作用，浓度为5 mg/ml时，对朱砂叶螨的雌成螨和卵24h后的校正死亡率分别达到82.82%和78.54%，LC50分别为1.4434mg/ml和2.0283mg/ml；对雌成螨24h后的产卵抑制率和驱避率分别达到78.46%和95.61%。

According to the emergence, PVA, mineral oil and three acaricides were sprayed during the different growing periods of Chinese chestnut use of fog machine.

根据板栗红蜘蛛发生消长规律，采用烟雾机喷雾施药，研究了聚乙烯醇、刹死倍和3种杀螨剂对红蜘蛛越冬卵和发生期螨的防治效果。

Investigation of the resistance development of T. cinnabarinus to common used acaricides, analysis of the resistance inheritance, clarification of resistance mechanisms, comparison of the ecological fitness, estimation of the resistance realized heritability and assessment of the resistance risk would have theoretical and practical senses for protocol designing of resistance management and enriching the research contents of pest resistance.

研究朱砂叶螨对常用杀螨剂的抗性发展趋势，分析其抗药性遗传方式，明确其抗性发生机制，比较敏感、抗药性品系的生态适合度，估计其抗药性现实遗传力并作出抗药性风险评估，对制订螨类抗药性治理方案和充实有害生物抗药性研究内容有着重要的理论和实际意义。

And Pharaoh spoke to Joseph, saying, Your father and your brothers have come to you.

47：5 法老对约瑟说，你父亲和你弟兄们到你这里来了。

Additionally, the approximate flattening of surface strip using lines linking midpoints on perpendicular lines between geodesic curves and the unconditional extreme value method are discussed.

提出了用测地线方程、曲面上两点间短程线来计算膜结构曲面测地线的方法，同时，采用测地线间垂线的中点连线和用无约束极值法进行空间条状曲面近似展开的分析。